109173440 has 56 divisors (see below), whose sum is σ = 261042912. Its totient is φ = 43489280.

The previous prime is 109173437. The next prime is 109173443. The reversal of 109173440 is 44371901.

It is an interprime number because it is at equal distance from previous prime (109173437) and next prime (109173443).

It is a super-3 number, since 3×109173440³ (a number of 25 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (109173443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98972 + ... + 100068.

Almost surely, 2^109173440 is an apocalyptic number.

109173440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 109173440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130521456).

109173440 is an abundant number, since it is smaller than the sum of its proper divisors (151869472).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

109173440 is a wasteful number, since it uses less digits than its factorization.

109173440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1425 (or 1415 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 109173440 is about 10448.6094768634. The cubic root of 109173440 is about 477.9388471221.

The spelling of 109173440 in words is "one hundred nine million, one hundred seventy-three thousand, four hundred forty".